Application Specific Integrated Circuit (ASIC) in a Nutshell

Application Specific Integrated Circuit (ASIC) in a Nutshell

A microprocessor is one of the best examples of a full custom ASIC. Designers may build different analog circuits, optimized memory cells, or mechanical structures on a single IC using this form of customization.

Fremont, CA: The key benefit of ASIC is that it reduces chip size by constructing a large number of usable units of a circuit on a single chip. A 32-bit microprocessor, memory blocks, network circuits, and other components are common in modern ASICs. System on Chip ASICs is one kind of ASIC. ASICs with various degrees of customization are being produced thanks to advancements in manufacturing technology and increased research in design methods.

Types of ASIC

Full Custom

All of the logic cells in this form of design are custom-made for a particular application. The logic cells for the circuits must be made specifically for the designer. Many of the interconnection mask layers have been customized. As a result, the programmer cannot adjust the chip's interconnections, and he must be mindful of the circuit layout when programming.

A microprocessor is one of the best examples of a full-custom ASIC. Designers may build different analog circuits, optimized memory cells, or mechanical structures on a single IC using this form of customization. The manufacturing and construction of this ASIC are both expensive and time-consuming. It takes about eight weeks to design these integrated circuits.

These are typically used in high-level programs. Full custom design offers the best performance, the smallest footprint, and the most versatility. Finally, since the logic cells, resistors, and other circuit elements are not pretested, the risk in design is high.

Semi-Custom

Logic cells are taken from regular libraries in this style of design. They are not handcrafted in the same way that a full custom design is. Some masks are custom-made, while others are taken from a library of pre-made masks. Standard cell-based ASICs and Gate Array-based ASICs are divided into two categories based on the type of logic cells taken from the library and the amount of customization permitted for interconnects.

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